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    karen321's Avatar
    karen321 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Jul 17, 2011, 03:09 PM
    Outside unit blowing cold air other then dischargeing hot air when a/c is on
    Outside unit blowing cold air other then discharging hot air when a/c is on.
    Not blowing inside the house.
    Stratmando's Avatar
    Stratmando Posts: 11,188, Reputation: 508
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    #2

    Jul 17, 2011, 03:43 PM

    Is the compressor kicking in? 24 Volts at contactor coil?
    drtom4444's Avatar
    drtom4444 Posts: 3,282, Reputation: 145
    Ultra Member
    		  
    #3

    Jul 18, 2011, 04:16 AM
    Sounds like the reversing valve is either stuck or not energizing like it should. It is energized through "O" or "B" (24-30 volts)depending on what part of US you are in. You will need a meter to see what the problem is. If you are lucky it will be a bad solenoid coil on reversing valve or bad t-stat. You have "O"(or B), "Y", and common going to outside unit. "Y" is contactor and "O" (or B)goes to reversing valve. Common is common to both, but you also have a defrost board which also has relays and can go bad, too. A stuck relay on it can keep it from cooling, but probably not the cause. Write back and let us know where you find 24 volts on the wires above.
    DrTom4444
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